| Titre : | Caffeine Intake and Semen Quality in a Population of 2,554 Young Danish Men. (2010) |
| Auteurs : | Tina-Kold JENSEN ; Niels JORGENSEN ; Sanne RASMUSSEN ; Niels-E SKAKKEBAEK ; SWAN (Shanna-H) : USA. Department of Obstetrics and Gynecology. School of Medicine and Dentistry. University of Rochester. Rochester. NY. ; Department of Environmental Medicine. University of Southern Denmark. Odense. DNK ; University Department of Growth and Reproduction. Rigshospitalet. Copenhagen. DNK |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 171, n° 8, 2010) |
| Pagination : | 883-891 |
| Langues: | Anglais |
| Mots-clés : | Caféine ; Sperme ; Qualité ; Population ; Jeune adulte ; Danemark ; Médicament psychotrope ; Homme ; Europe |
| Résumé : | [BDSP. Notice produite par INIST-CNRS 89R0xCkE. Diffusion soumise à autorisation]. The authors examined the association between semen quality and caffeine intake among 2,554 young Danish men recruited when they were examined to determine their fitness for military service in 2001-2005. The men delivered a semen sample and answered a questionnaire including information about caffeine intake from various sources, from which total caffeine intake was calculated. Moderate caffeine and cola intakes (101-800 mg/day and<=14 0.5-L bottles of cola/week) compared with low intake (<100 mg/day, no cola intake) were not associated with semen quality. High cola (>14 0.5-L bottles/week) and/or caffeine (>800 mg/day) intake was associated with reduced sperm concentration and total sperm count, although only significant for cola. High-intake cola drinkers had an adjusted sperm concentration and total sperm count of 40 mill/mL (95% confidence interval (CI) : 32,51) and 121 mill (95% CI : 92,160), respectively, compared with 56 mill/mL (95% CI : 50,64) and 181 mill (95% CI : 156,210) in non-cola-drinkers, which could not be attributed to the caffeine they consumed because it was<140 mg/day. Therefore, the authors cannot exclude the possibility of a threshold above which cola, and possibly caffeine, negatively affects semen quality. Alternatively, the less healthy lifestyle of these men may explain these findings. |
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